The floors were covered with a fine gray dust, and the dust had caked in ventilation patterns on the walls.

It was slow work; the dust had caked, turned into embedded grime.

He was covered in sweat, and the dust had caked onto his face.

MANY were shoeless, the dust and blood caked upon their shredded feet.

He was perhaps in his early twenties, but dust caked his face, so it was hard to tell.

The dust of geological ages caked beneath her fingernails.

Gravel sprayed out from under his pounding feet, and dust caked him where rivers of sweat didn't wash it away.

His bandana got sweaty, and the dust caked on it so that he felt he was inhaling mud.

The dust had mingled with his sweat and caked his face and body.

Behind the dust caking his face, his eyes were red with weariness.